PrepTest 153, Section 1, Question 8
A recent worldwide decline of ocean fishery stocks(470 more words not shown)
There is information in the(10 more words not shown)
- AHow does the(13 more words not shown)
- BWhat sort of(8 more words not shown)
- CApproximately how many(13 more words not shown)
- DWhat proportion of(12 more words not shown)
- EHow long does(16 more words not shown)
Reading the passage
This asks which question we can actually answer from the information given. A familiar topic isn't enough: we need the particular fact being requested. Knowing that something causes damage, for example, doesn't necessarily tell us how the damage happens.
Working the answers
- A
The second paragraph lists escaped nonnative species as a possible cause of habitat destruction. It doesn't explain the mechanism by which those species cause the damage. The effect is identified; the requested how is missing.
- B
Fish and shellfish are mentioned together in the opening, but no type of shellfish is identified as the most commonly farmed. We can't supply that ranking.
- C
The numerical ratios concern wild fish used to produce a kilogram of farmed fish. They don't give the total kilograms an average wild salmon consumes over its lifetime. The wild-versus-farmed distinction and the unit of measurement both matter here.
- DCorrect
The first paragraph gives exactly this proportion: fish farming produces “a quarter” of the fish and shellfish eaten by humans. That is 25 percent, so the question has a direct numerical answer.
- E
The final paragraph says niche markets can keep wild catches high. It gives no timetable for their effects on populations. We cannot turn the existence of an effect into a number of months or years.
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